Combination gas range and water heater



Feb. 16, 1937. w. P. GENOVAR, JR 2,070,987

COMBINATION GAS RANGE AND WATER HEATERv Gttorueg :inventor Fb."l6, 1937. w. P. GENovAR, JR

I COMBINATION GAS RANGE AND WATER HEATER Filed Oct. 9, 1934 2 Sheets-Sheet 2 twentor MHH/fam F Genovar, dr,

Patented Feb. 16, 1937 i uiu'ri-D STATES PATENT .OFFICE This invention relates to a gas rangel of that kind which is intendedk to be operated by natural or manufactured gas,for the purposes of cooking and the heating of water for domestic uses, and the invention relates more particularly to means for utilizing all of the heat from the burning gases.V

In the form of gas and liquid fuel burning gas ranges now in use, the burners are placed or located at or near the level of the range top and a very large per cent of the :burning gases from `whichthe heat is derived are allowed to rescape upward past the sides of the cooking utensil, and no meansfis provided by`which these burning gasesy can vibe confined `andl directed directly against the surface of the cooking utensil, and

also utilized either for the direct heating of water or as an additional means forconnection with the automatic water heater for the water boiler.

To accomplish this, I have'designed a cooking range, to be operated either by gas or other suitable fuel, and in which the burners are located below the level of the range top, and are provided with tubular casings to confine the burning gases, and the cooking utensils are placed within these casings in such a manner that all `or the greater part of the burning gases are brought into contact with not only the bottom of the cooking utensil, but a very large portion of its sides vas well, thus not only producing the greatest heat from the minimtun of fuel, but reducing the cooking time required.

To further bring the burnt gases into contact with the sides of the cooking utensil, I have provided within this burner casing a second inner casing or tube that extends upward from the burner to within a short distance of the range top and which divides the burner casing into an inner direct heating chamber for the cookingv utensil and an outer chamber or flue that I have connected by suitable flues to a heat exchanger which is mounted within the vent or stack and which is designed vto heat a water pipe passing therethrough from the usual hot water storage tank, which normally is heated by the automatic gas heater. Y

To further help confine the burnt or burning gases to the heating chamber and in contact with the cooking utensil, I have provided the range top with a series of concentric lids or rings for each burner, whereby the opening between the lid ring and the utensil is reduced in size as much as possible, this also preventing the gases from blowing away and from being diluted and cooled by contact with the air,

I have also provided means wherebythe bottom thereby. i

The object of the invention is to provide a gas range in which each of the burners and cooking utensils are confined within a heating chamber to confine the heat to the utensil.

Another object. of the invention is to provide means whereby the burnt gases may be utilized for heating water, either directly or indirectly.

Another object of the invention is to provide means whereby the burning gases are confined and directed against a largesurface to the cooking utensilgff I Another object of theinvention'is to provide means whereby the direction of travel of the burnt gases. may be directed' in an automatic manner by the gas control Valves. Another object of the invention is to provide means whereby the automatic gas operated heater for the hot water storage tank may be controlled in an automatic manner.

With these and other objects in view, my invention consists in certain vnovel construction and combination of parts as will hereinafterbe fully described and claimed, `and. further illustrated in the accompanying drawings which form a part hereof and in which like figures of reference refer to corresponding parts in, all ofthe views, and it is understood that slight changes may be made therein without departing from theY spirit of the invention.

In the. drawings:

Figure 1 is a front elevation of a gas range and hot water storagey tank, shown partly in' section and illustrating my device.

Figure 2 is a top plan view of the same, also shown partly in section.

Figure 3 is an end View of the range.

Figure 4 is a rear View of the range.

Figure 5 is an enlarged detailr view partly in section of the damper and heat exchanger.

Referring to the drawings: t

The usual gas range is indicated by the numeral I0, and is provided with the oven II, Vand supported on the legs I3; while adjacent thereto is placed the usual type of water boiler, supplied with the automatic gas operated water heater I4 which isfed by the pipe I5 from the gas main 9,r through a thermostatic valve I6 mounted on the boiler I1; said automatic gas storagetank I1 bythe pipes I8 and I9.

of the cooking utensil is always spaced the proper v distance from the gas burner and is also supported, v

thus forming a ilue 21 between the walls of sai'd The range I is formed with a closed top 20 formed with the openings 2| for each burner, and each of these openings are provided with a series of concentric lids or rings 22 to Vary the size of the openings in the top 20 above the burners.

Below each right hand burner opening in the top 20 is mounted a burner which is located on a lower plane from said top 20 and as shown in Figure 2 of the drawings, the two right hand burners 23 are provided .with annular tubular casings 24 which extend upward from the burner 23 to within a short distance of the top 20, and embracing this casing 24 and spaced .therefrom is a second or outer casing 25 which is attached to the inner casing 24 by a ring bottom .26 and extends upward to the under side of the top 20,

casings 24 and 25, which communicates with a Vtransverse ue 28 extending back and communicati-ng withjand attached to the valve .box 29, the short nues 30 .from the .annular ilues 21 to Vfthe transverse ue '28 `being provided with the dampers 3|.

W'ITheburner-s 23 may :be of any suitable type 'and are mounted upon thegas feed pipes 32 from fthe `main 9 and each is provided .with its own cock 33, and the upper face of each bur-ner 23 is formed with the supporting ribs 34 extending upward andV upon which Vthe bottom of the cooking utensil 35 rests.

Two of these cocks 33 have their stems elon- 'gated and projecting from Vthe bottom thereof, and :tothem aresecured the .arms 3,6 which are secured to one arm of a bell-crankr31 by the flink A38,. while the. other arm of the bell-crank .31 is attached by a 40 to the vertical rod 13,9 of the fluev damper 3|, in such a manner that when the gas is turned on for the burner, the damper will kbe opened in theV ue from that particular burner.

` The' tubular casings Y24 of the two left hand burners as shown in Figure 2, are not provided with an outer casing and these burners do not have any connection with the vmeans for heat- `ing the water. '110 the rear of the range and attached to the transverse flue 231s placed a valve or damper box 29, from the upper side of which extends the, main .Smoke or vent flue 42 which is carried t0 thehmney fin the usual manner; and from the oven and broiler is a Vent pipe 43 which is connected to the transverse pipe 28 between the back. .oi .the range and the damper b'OX 29.

From one side ef this damperbox 29 is carried a by-pass pipe 44 which is connected into the main flue 42 upon a higher level.

Within this main flue 42 Yis mounted the heat exchanger which comprises the water pipe 45 which is connected to the hot water storage tank l1 by the pipes 46 and 41, and which within the main ue 42 is provided-with a series of radial ns 48 which are in contact with the passing burnt gases and heated thereby to heat the water vpassing therethrough and circulating through the hot water storage tank l1.

The, damper box 29 is provided with a twoway damper 49 which is operated by a solenoid 11150 Iwhich i'scontrollecl by a thermostat 5| attached to the water boiler l1 and connected in an electrical circuit with said solenoid 50, the purpose of this being that when the water in the hot vwater storage tank has reached its maximum temperature, theheat and burnt gases from the Vrange will bevdiverted to the stack by the -bypass'll; v,while if'the temperature of thewater in the storage tank is low, the burnt gases from the range will..;pass through the :heat exchanger and raise .the temperature of the hot water storage .,tank, thus; utilizing the heat and 'burnt gases fromV the range burners in place of the heat from the automatic gas heater and in this Vmanner eiecting a great saving of fuel required for heating the water.

, The flue 43 from the oven is also provided with a damper 32 which is operated by the gas cut 01T that controls the ow of gas to the burner in the oven. Y

Hav-ing thus described my invention, what I claim as-new and desire to secure by Letters Patent, is:`v 1

In a `combination 'gas cooking range and water v4heater including a range top, a series of burners located below and spaced from the range top, anY inner tubular casing open at the top and surroundingeach burnermand spaced below the range top, an outer tubular casing of greater Adiameter mounted in axial relation to the inner tubular casingand spaced therefrom to form lan annular flue, said outer casing being closed at'its upper end by the range top and at its lower end by a spacing ring secured t0 the inner casing, a heat transmitting flue connecting said outer casing and said annular flue and said water heater for conveying the heat from the burner to the .water heater, meansl for selectively closing 'off any of said heat transmitting ilues and means for controlling simultaneously both the supply of fuel to a burner and the closure of the flue of a burner.

WILLIAM P. GENOVAR, JR. 

